Polyester
Geotextile are
multi-purpose fabrics that
are felt-like in appearance. The main functions for these products are filtration and separation. The most common nonwoven is
a needle-punched product. Staple fibers or continuous filaments are bonded by mechanically entangling the fibers with barbed needles.In a granular or what is sometimes known as a single layer
green roof the filter
fabric is
used to separate larger granular material for drainage from finer material in the growing media. The ability of the geotextile to allow water permeability is referred to as hydraulic conductivity
by permittivity.
